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All results from a given calculation for CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene)

using model chemistry: CCSD(T)=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at CCSD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-1195.071869
Energy at 298.15K-1195.072453
HF Energy-1193.690329
Nuclear repulsion energy351.055616
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)=FULL/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 1782 1707        
2 Ag 1230 1178        
3 Ag 646 619        
4 Ag 432 414        
5 Ag 292 279        
6 Au 372 357        
7 Au 135 130        
8 Bg 553 529        
9 Bu 1260 1207        
10 Bu 898 860        
11 Bu 431 413        
12 Bu 177 170        

Unscaled Zero Point Vibrational Energy (zpe) 4103.1 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 3930.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)=FULL/cc-pVTZ
ABC
0.14360 0.05048 0.03735

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.063 0.662 0.000
C2 0.063 -0.662 0.000
F3 -1.256 1.236 0.000
F4 1.256 -1.236 0.000
Cl5 1.256 1.743 0.000
Cl6 -1.256 -1.743 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33081.32342.31191.70512.6845
C21.33082.31191.32342.68451.7051
F31.32342.31193.52442.56232.9788
F42.31191.32343.52442.97882.5623
Cl51.70512.68452.56232.97884.2961
Cl62.68451.70512.97882.56234.2961

picture of trans-1,2-dichloro-1,2-difluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 121.160 C1 C2 Cl6 123.848
C2 C1 F3 121.160 C2 C1 Cl5 123.848
F3 C1 Cl5 114.992 F4 C2 Cl6 114.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability